biotechnology (2)

Pandora's Box...



Topics: Biology, Biotechnology, Civics, Ethics, Existentialism

A private DNA ancestry database that’s been used by police to catch criminals is a security risk from which a nation-state could steal DNA data on a million Americans, according to security researchers.

Security flaws in the service, called GEDmatch, not only risk exposing people’s genetic health information but could let an adversary such as China or Russia create a powerful biometric database useful for identifying nearly any American from a DNA sample.

GEDmatch, which crowdsources DNA profiles, was created by genealogy enthusiasts to let people search for relatives and is run entirely by volunteers. It shows how a trend toward sharing DNA data online can create privacy risks affecting everyone, even people who don’t choose to share their own information.

“You can replace your credit card number, but you can’t replace your genome,” says Peter Ney, a postdoctoral researcher in computer science at the University of Washington.

Ney, along with professors and DNA security researchers Luis Ceze and Tadayoshi Kohno, described in a report posted online how they developed and tested a novel attack employing DNA data they uploaded to GEDmatch.


The DNA database used to find the Golden State Killer is a national security leak waiting to happen
Antonio Regalado, Technology Review

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Decoding Sweat...

New wearable sensors developed by scientists at UC Berkeley can provide real-time measurements of sweat rate and electrolytes and metabolites in sweat. (Credit: Bizen Maskey, Sunchon National University)


Topics: Biophysics, Biotechnology, Microfluidics, Nanotechnology, Research

A new scalable, high-throughput fabrication process that makes use of roll-to-roll printing and laser cutting can produce wearable sweat sensors rapidly and reliably and on a large scale. The devices, which can almost instantly detect and analyse electrolytes, metabolites and other biomolecules contained in sweat, could be employed in real-world applications and not just as laboratory prototypes.

Analyzing sweat is a non-invasive way to monitor a range of biomolecules, from small electrolytes to metabolites and hormones and larger proteins that come from deeper in the body. Indeed, sweat sensing has already been used to medically diagnose diseases like cystic fibrosis and autonomic neuropathy and to assess fluid and electrolyte balance in endurance athletes.

Traditional sweat sensors collect sweat from the body at different times and then analyse it. This means that the devices can’t be used to detect real-time changes in sweat composition – during physical activity, for example, or to monitor glucose levels in diabetic patients. Wearable sensors, which make use of flexible and hybrid electronics, overcome this problem by allowing for in-situ sweat measurements with real-time feedback. However, it is still difficult to reliably make sweat sensor components (including microfluidic chip and sensing electrodes) in large quantities and with good reproducibility.


Wearable patches could ‘decode’ sweat, Belle Dumé, Physics World

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